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Warning: include_once() [function.include]: Failed opening 'netpayclient/netpayclient.php' for inclusion (include_path='.;C:\php6\pear') in D:\AppServ\www\da\return_chinapay.php on line 3

Fatal error: Call to undefined function buildKey() in D:\AppServ\www\da\return_chinapay.php on line 5